ENS 45574

v t e ENS Event
15:02 Sep 29, 2009
Title	Part 21 Involving a Pump Shaft Coupling Failure
Event Description	A service water pump failed during operation on 9/29/2009. Upon disassembly it was detected that a shaft coupling installed on a repaired service water pump failed while in service. The failed coupling was replaced with a new coupling of a different heat code. According to the manufacturer, the threaded coupling design was only supplied for Palisades. * * UPDATE FROM SESHA GIRI TO PETE SNYDER AT 1529 ON 2/22/10 * * * HydroAire conducted a root cause analysis on the issue. They and their heat treat vendor, BodyCote, reviewed all of their safety related work records for the past three years and monitored heat treating of recent orders. Records showed that this anomaly occurred only on one piece and it is a random isolated incident." The vendor believes that corrective actions that they and BodyCote have taken "should remove concerns in the future heat treatments and past review of records confirms adequacy of the heat treat at least for the past three years. Notified R3DO (Stone) and Part 21 Group via email.

ENS 45574 +/-
Where
Hydroaire Chicago, Illinois (NRC Region 3)
Organization:	Hydroaire
Reporting

10 CFR 21.21
Time - Person (Reporting Time:+1873.15 h78.048 days <br />11.15 weeks <br />2.566 months <br />)
Opened:	Sesha Giri 17:11 Dec 16, 2009
NRC Officer:	Vince Klco
Last Updated:	Feb 22, 2010
45574 - NRC Website
v • d • e

v t e Emergency Notification System
Hydroaire with 10 CFR 21.21, Notification of failure to comply or existence of a defect and its evaluation
WEEKMONTHYEAR2011-08-10T05:00:00 [Table view]
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